- Detects refrigerant leaks below 3g/a level
- Fast response time under 1 second
- Visual and audible leak warning system
- Flexible 370mm gooseneck probe design
Testo 316-4 Refrigerant Leak Detector
The Testo 316-4 Refrigerant Leak Detector helps engineers find refrigerant leaks quickly and accurately. Its highly sensitive sensor can detect even very small leaks, making it suitable for routine maintenance and fault finding. Fast response times help reduce inspection time and improve efficiency on site.
Designed for use with a wide range of refrigerants, the instrument supports common refrigerants including CFC, HCFC, HFC and hydrogen depending on the selected set. Clear visual and audible alarms provide immediate feedback when a leak is detected. In addition, the colour display changes from green to red to make leak identification simple.
Accurate Leak Detection
The flexible gooseneck probe allows easy access to pipework, joints and difficult-to-reach locations. A trend display helps users identify areas with the highest refrigerant concentration, making leak tracing faster and more precise. Permanent sensor monitoring also checks for contamination and faults to maintain reliable operation.
Testo 316-4 Refrigerant Leak Detector includes a cleanable filter that helps protect the sensor and extend service life. Earphone connectivity supports operation in noisy environments where audible alarms may be difficult to hear. As a result, users can work confidently in a variety of industrial and commercial settings.
Two Set Options Available
Two different set versions are available to suit different refrigerant applications. Set 1 is designed for CFC, HCFC, HFC and hydrogen refrigerants, while Set 2 is intended for ammonia systems. This flexibility allows engineers to select the most suitable version for their specific requirements.
Built for daily professional use, the Testo 316-4 Refrigerant Leak Detector combines high sensitivity with simple operation. Lightweight construction and compact dimensions improve portability, while long battery life supports extended inspection periods. The complete kit includes essential accessories for immediate use.
Key Features
- Detects refrigerant leaks with sensitivity below 3g/a
- Permanent sensor monitoring for contamination detection
- Automatic sensor status monitoring
- Colour display changes from green to red when leaks are found
- Audible alarm for rapid leak indication
- Trend display assists with locating leak sources
- Flexible probe improves access around pipework and fittings
- Cleanable filter helps maintain sensor performance
- Earphone connection for use in noisy environments
- Suitable for commercial and industrial refrigeration systems
- Portable handheld design for field use
- Supplied as a complete leak detection kit
- Available in two refrigerant-specific set versions
- Fast start-up for efficient operation
Technical Specifications
| Manufacturer | Testo |
| Product | Testo 316-4 Refrigerant Leak Detector |
| Manufacturer Part Code Set 1 | 0563 3164 |
| Manufacturer Part Code Set 2 | 0563 3165 |
| Sensitivity | Less than 3 g/a |
| Lower reaction threshold | 3 g/a |
| Response time | Less than 1 second |
| Leak indication | Visual and audible alarm |
| Probe length | 370 mm flexible gooseneck |
| Start-up time | Less than 50 seconds at 0°C to +50°C |
| Start-up time at low temperature | Less than 80 seconds below 0°C |
| Operating temperature | -20°C to +50°C |
| Storage temperature | -25°C to +70°C |
| Operating humidity | 20% to 80% RH |
| Power supply | 1 battery block with 6 NiMH cells |
| Battery life | 6 hours continuous operation |
| Dimensions | 190 x 57 x 42 mm |
| Weight | 348 g |
| Standard | EN 14624:2012 |
| Detectable refrigerants Set 1 | CFC, HCFC, HFC, Hydrogen and common refrigerants including R134a, R22 and R404a |
| Detectable refrigerants Set 2 | Ammonia NH₃ |
| Warranty | Not specified |
Comparison Table
| Specification | Set 1 | Set 2 |
| Manufacturer Part Code | 0563 3164 | 0563 3165 |
| Primary Application | CFC, HCFC, HFC and Hydrogen systems | Ammonia systems |
| Reference Refrigerants | R134a, R22, R404a | NH₃ |
| Sensitivity | Less than 3 g/a | Less than 3 g/a |
| Response Time | Less than 1 second | Less than 1 second |
| Battery Life | 6 hours | 6 hours |
| Weight | 348 g | 348 g |
| Dimensions | 190 x 57 x 42 mm | 190 x 57 x 42 mm |
| Gooseneck Length | 370 mm | 370 mm |
Document Downloads
What’s Included
- Testo 316-4 Refrigerant Leak Detector
- Carrying case
- Mains charger unit
- Earphones
Meta Description
Testo 316-4 Refrigerant Leak Detector with <3g/a sensitivity, fast leak detection, visual alarms and two set options for different refrigerants.